Which LED diodes are compatible with Blackwidow 2014?

I have an used keyboard, it is Razer BlackWidow 2014 (not ultimate or tournament edition). I had been using it for some time and i wondered why the logo didn’t lit. So, i disassembled my keyboard and found that there was no led!

So, are on ebay or aliexpress compatible LEDs i can buy? And which one should i buy?